Rotary kiln capable of recovering kiln tail waste heat

The utility model provides a kiln tail waste heat recovery rotary kiln which comprises a steel frame platform, a kiln head, a kiln body, a sealing ring, a rotary device and a waste heat recovery device, and the waste heat recovery device comprises a heat conduction ring, a heat dissipation ring, a fan, a hot chamber, a kiln tail smoke chamber, an exhaust pipe and a flow fan. The rotary device comprises a large gear, a riding wheel, a bearing seat, a rotating shaft, a motor, a first gear and a second gear, the rotary cement kiln is key equipment for producing cement, a large amount of waste heat can be generated in the cement calcining process, and the surface temperature of a kiln body reaches up to 250-350 DEG C. The waste heat recovery device is arranged at the kiln tail cooling section of the rotary kiln, cooling and heat dissipation of clinker can be facilitated, heat of the kiln body and waste heat gas in the kiln are conveyed to the waste heat boiler, the waste heat utilization rate is increased, heat p